Door-check



J. CONN.

DOOR. CHECK.

Patented June 8, 1886.

(No Model.)

H. PETERS, Phulo-Lhhagnplwrl Washingun. D. C.

UNITED SrlvrnsV PATENT OFFICE.

JOHN CONN, OF VALPARAISO, INDIANA.

Doon-CHECK.

SPECIFICATION forming part of Letters Patent No. 343,298, dated J une 8, 1886 Application mea March sa, niet.

To all whom it may concern:

Be it known that I, JOHN CONN, a citizen of the United States of America, residing at Valparaiso, in the county of Porter and State of Indiana, have invented certain new and useful Improvements in Door Stops, Lockers, or Bumpers, or Buffers, of which the following, in connection with the accompanying drawings, is a specification.

v The purpose of my invention is to make a device whereby a door may be prevented from being opened, and which will also prevent the door from being opened far enough to strike the base-board. In other words, Iaim to furnish a novel lock, as well as a novel bumper or buffer, allof which Will be hereinafter more fully explained.

In the drawings, Figure l is a front view of a portion of a door provided with a device containing my improvements. Fig. 2 is an edge view of a door, showing the said device in side elevation, the said device being shown partly in section or broken away in order to more clearly illustrate its construction. Fig. 3 is a section in the plane of the line x x of Fig. 2, viewed in the direction indicated by the arrow there shown. Fig. 4 is a horizontal central section through the cam-shaped roller; and Fig. 5 is a detail, enlarged, showing the means employed for connecting the lock and release device detachably with the rack to which the said roller is applied.

Like letters of reference indicate like parts.

A represents a door.

B is a plate which constitutes the back piece of my improved device. O is a box in which there is a recess or chamber, a, and in the front of which is a slide or opening, b. c is a stop or rest in the recess or chamber a. These parts B and O, I apply to each other by means of screws or other fastenings.

D is a sliding bar or shank, which is bifurcated at its lower end, and E is an oval or cam l shaped roller turning in the lower end ofl the said bar.

d d are shoulders formed by cutting away the upper portion of the said bar, and e e are cogs or teeth in that portion of the said bar which is below the lower shoulder d. In other words, the teeth or cogs e c may be said to constitute a rack on a portion of the said bar.

F is a catch and release device pivoted to Serial No. 196,939. (No model.)

the box C, This device has on it cogs or teeth f f, and the cogged portion thereof is curvilineal, the said curved portion being -quite near the pivotal point on which the device F bears. In other words, the said device is curvilineal in form, and is eccentrically pivoted. I deem it preferable to make the outer Yend or portion of the device F comparativelyl heavy or weighted, as indicated at g. I also deem it preferable to apply a rubber rim, h, to the perimeter of the roller E, and this rubber I crease from side to side, as is clearlyindicated at t' t', Fig. 2.

G is an open spiral spring arranged between the shoulder c and the upper shoulder d of the bar D. f

The device now described I apply to a door near its lower free corner by means of screws or other fastenings, and so that the roller E will be about one-half an inch above the Iioor when the said device is not intended to be op-k erative.

In Fig. 1 the attachment is shown when ar ranged in such a position as to not be operative in all respects. It will be perceived,

however, that it will operate as a bumper or buffer, for the reason that it will be interposed between the door and the base-board so as to strike the latter in case the door be opened sufficiently to admit of that result, and thus prevent the door from striking the base-board. This is one of the advantages which I aim to accomplish by means of my improvements.

In Fig. 2 Ihave shown the attachment when arranged in position to operate as a stop or locker for preventing the opening of the door. The bar D is in the latter case sutlioiently low to allow the attened portion of the roller E to rest upon the floor, and the lock and release device F engages the teeth or rack upon the bar D in such a manner as to prevent the said bar from being moved upward, as will be perceived on reference to Fig. 2. It is obvious that as the door is opened the roller E will rotate slightly in such a direction as to cause the roller to bear irmly upon the floor, and that the cam-shaped form of the roller while in` IOO draw the teeth thereon out of engagement l doors, for purposes analogous to those already with the teeth on the bar D. As soon as this disengagement occurs the spring G moves the bar D upward into the position shown in Fig. 1, and the attachment is thereafter no longer operative, excepting as a bumper or buffer; but to set the bar D so that the door will be prevented from being opened it will only be necessary to push the said bar downward, either by means of the hand or fo'ot, until the roller E rests upon the door in the manner aiready described. During this downward movement of the bar D there will be a slipping engagement between the cogs e and f; but as soon as this downward movement ceases the device F will automatically fall into engagement with the cogs on the bar D, and thus temporarily lock it in its downward position.

I desire to state that this device may also be used on windows and gates, as well as upon referred to.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

The combination of the eccentric E, the toothed vertically-yielding bar D, and a pivoted catch also toothed to engage the said bar, and a box or case, the whole constituting a combined door stop or locker and bumper or buffer, substantiallyas and for the purposes specied.

In testimony that I claim the foregoing as my own I hereunto affix my signature in presence of two witnesses.

JOHN CONN.

Vitnesses:

` ELIJAH C. Woon, JULES C. BLOCH. 

